440044042221 has 48 divisors (see below), whose sum is σ = 728430019200. Its totient is φ = 250759327104.

The previous prime is 440044042201. The next prime is 440044042241. The reversal of 440044042221 is 122240440044.

It is an interprime number because it is at equal distance from previous prime (440044042201) and next prime (440044042241).

It is not a de Polignac number, because 440044042221 - 2¹¹ = 440044040173 is a prime.

It is a super-2 number, since 2×440044042221² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440044042201) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 60868435 + ... + 60875663.

It is an arithmetic number, because the mean of its divisors is an integer number (15175625400).

Almost surely, 2^440044042221 is an apocalyptic number.

It is an amenable number.

440044042221 is a deficient number, since it is larger than the sum of its proper divisors (288385976979).

440044042221 is a wasteful number, since it uses less digits than its factorization.

440044042221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9778 (or 9775 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 27.

Adding to 440044042221 its reverse (122240440044), we get a palindrome (562284482265).

The spelling of 440044042221 in words is "four hundred forty billion, forty-four million, forty-two thousand, two hundred twenty-one".